Device Control Method, Device Control System

1. A device control method in a device control system for controlling one or more devices by using one or more operation terminals, wherein the device control system includes the one or more devices, the one or more operation terminals, and a server device, and the server device includes a processor and a non-transitory computer-readable recording medium having stored thereon executable instructions, which when executed by the processor, cause the server device to store user information, the user information capable of including an associated set of a terminal identifier and a device identifier, the device identifier in the associated set identifying a device module attached to a device controllable by using an operation terminal having attached thereto a terminal module identified by the terminal identifier, the device control method comprising: an operation receiving step of the server device receiving a device control operation for controlling a given device, the device control operation performed by using a given operation terminal; a determining step of the server device determining whether the given operation terminal is in a first state or a second state, the given operation terminal having higher authority of control when in the first state compared to when in the second state; a limiting step of, when determined in the determining step that the given operation terminal is in the second state, the server device limiting a range of controls of the given device made available to the given operation terminal when in the second state so as to correspond to part of a range of controls of the given device made available to the given operation terminal when in the first state; a device controlling step of the server device controlling the given device based on the device control operation; and an updating step of, when a new device module is to be issued, the server device generating a device identifier identifying the new device module, and updating the user information by adding the device identifier identifying the new device module to the user information, wherein in the determining step, the server device receives a terminal identifier from the given operation terminal, and the given operation terminal is determined as being in the first state when the received terminal identifier matches the terminal identifier included in the user information, and as being in the second state when the received terminal identifier does not match the terminal identifier included in the user information, in the device controlling step, the given device is controlled when the given device has attached thereto a device module storing a device identifier identifying the device module, and when determined in the determining step that the given operation terminal is in the second state, the control of the given device is performed within the range of controls of the given device made available to the given operation terminal when in the second state, and in the updating step, the user information is updated so that the device identifier identifying the new device module is associated, in the user information, with a terminal identifier identifying a terminal module attached to an operation terminal possessed by a user who makes a request for issuance of the new device module.

2. The device control method of claim 1 , wherein the request for issuance of the new device module is received in the operation receiving step, the request being made by using the given operation terminal, and in the limiting step, the issuance of the new device module is permitted when the given operation terminal is in the first state and is rejected when the given operation terminal is in the second state.

3. The device control method of claim 2 , wherein in the updating step, the device identifier identifying the new device module is generated and the user information is updated by using the device identifier identifying the new device module when the issuance of the new device module is permitted in the limiting step.

4. The device control method of claim 1 further comprising a terminal identifier acquiring step of, when the given operation terminal has attached thereto a terminal module storing a terminal identifier identifying the terminal module, the server device acquiring the terminal identifier from the terminal module, wherein in the determining step, when the terminal identifier acquired in the terminal identifier acquiring step is included in the user information, the given operation terminal is determined as being in the first state.

5. The device control method of claim 4 , wherein in the device controlling step, the given device is controlled only when the given device has attached thereto a device module storing a device identifier identifying the device module and the device identifier is associated with the terminal identifier acquired in the terminal identifier acquiring step in the user information.

6. A device control method in a device control system for controlling one or more devices by using one or more operation terminals, the device control system comprising: the one or more devices; the one or more operation terminals; and a server device, the server device comprising: a processor; and a non-transitory computer-readable recording medium having stored thereon executable instructions, which when executed by the processor, cause the server device to: store user information, the user information capable of including an associated set of a terminal identifier and a device identifier, the device identifier in the associated set identifying a device module attached to a device controllable by using an operation terminal having attached thereto a terminal module identified by the terminal identifier; receive a device control operation for controlling a given device, the device control operation performed by using a given operation terminal; determine whether the given operation terminal is in a first state or a second state, the given operation terminal having higher authority of control when in the first state compared to when in the second state; limit, when the given operation terminal is determined to be in the second state, a range of controls of the given device made available to the given operation terminal when in the second state so as to correspond to part of a range of controls of the given device made available to the given operation terminal when in the first state; control the given device based on the device control operation; and generate, when a new device module is to be issued, a device identifier identifying the new device module, and update the user information by adding the device identifier identifying the new device module to the user information, wherein the server device receives a terminal identifier from the given operation terminal, and the given operation terminal is determined as being in the first state when the received terminal identifier matches the terminal identifier included in the user information, and as being in the second state when the received terminal identifier does not match the terminal identifier included in the user information, the given device is controlled when the given device has attached thereto a device module storing a device identifier identifying the device module, and, when the given operation terminal is determined to be in the second state, the given device is controlled within the range of controls of the given device made available to the given operation terminal when in the second state, and the user information is updated so that the device identifier identifying the new device module is associated, in the user information, with a terminal identifier identifying a terminal module attached to an operation terminal possessed by a user who makes a request for issuance of the new device module.

7. The device control method of claim 1 , wherein the first state corresponds to a first security level, the second state corresponds to a second security level different from the first security level, when the given operation terminal has the first security level, the given operation terminal is capable of controlling the range of controls of the given device made available to the given operation terminal when the given operation terminal is in the first state and the range of controls of the given device made available to the given operation terminal when the given operation terminal is in the second state, and when the given operation terminal has the second security level, the given operation terminal is capable of controlling only the range of controls of the given device made available to the given operation terminal when in the second state.

8. The device control method of claim 6 , wherein the first state corresponds to a first security level, the second state corresponds to a second security level different from the first security level, when the given operation terminal has the first security level, the given operation terminal is capable of controlling the range of controls of the given device made available to the given operation terminal when the given operation terminal is in the first state and the range of controls of the given device made available to the given operation terminal when the given operation terminal is in the second state, and when the given operation terminal has the second security level, the given operation terminal is capable of controlling only the range of controls of the given device made available to the given operation terminal when in the second state.